河北省沙河市二十冶综合学校高中分校高中英语 Unit1 Festivals around the world Grammar导学案（无答案）新人教版必修3

Unit 1 Grammar【学习目标】：非限制性定语从句【学习重点】：非限制性定语从句和限制性定语从句区分【学习难点】：as和which的区分【教学过程】：定语从句有限制性和非限制性两种。限制性定语从句是先行词不可缺少的部分，去掉它主句意思往往不明确；非限制性定语从句是先行词的附加说明，去掉了也不会影响主句的意思，它与主句之间通常用逗号分开，例如： This is the house which we bought last month. 这是我们上个月买的那幢房子。（限制性） The house, which we bought last month, is very nice.这幢房子很漂亮，是我们上个月买的。（非限制性） 一、that不能用来引导非限制性定语从句。如： 【考例一】She heard the terrible noise, _brought her heart into her mouth. A. it B. which C. this D. that 【解析】选B。后半句为非限制性定语从句，尽管先行词noise属于事物，也不能用that而要用which来引导。which指代noise，在从句中作主语。 二、除which外，还可用when，where，whose，whom等引导非限制性定语从句，且各自的用法及差异与它们用在限制性定语从句时相同。如： She is going to live in Macao, where she has some close friends. 她要到澳门去居住，在那里她有几个密友。 (关系副词where指代表示地点的名词Macao，并在从句中作状语。) 【考例二】Recently I bought an ancient Chinese vase, _was very reasonable. A. which price B. the price of which C. its price D. the price of whose 【解析】选B。whose在从句中作表示所属关系的定语，既可指代人，也可指代物。指物时，常可转换为of which；指人时常可转换为of whom。 三、非限制性定语从句的关系代词which，既可以指代前面的先行词，也可以指代前面整句的含义。如： 【考例三】 Dorothy was always speaking highly of her role in the play, of course,_made the others unhappy. A. who B. which C. this D. what 【解析】选B。指代“Dorothy总是高度评价自己在那场戏中所担任的角色”的整个事件。 【考例四】Carol said the work would be done by October,_personally I doubt very much. A. it B. that C. when D. which 【解析】表示时间的名词October，用“我个人非常怀疑”来修饰，意思不通。应该修饰整个主句， 表示对“Carol说在十月前能做好这项工作”怀疑。故选D。 四、引导非限制性定语从句时as和which的差异：从句置于句首时，非限制性定语从句只能用as引导，而置于句末时，两者都可以使用。 如： 【考例五】_is known to everybody, the moon travels round the earth once every month. A. It B. As C. That D. What 【解析】逗号表明为非限制性定语从句。选B。一、定语从句专练习: 用恰当的关系词填空。1. Do you know the place _ he borrowed the book?2. He talked about the teachers and schools _ he had visited.3. Some of the roads were flooded, _ made our journey more difficult.4. The novel _ youre interested was written by Mark Twain.5. _ is often the case, we have worked out the production plan.6. Yesterday I met an old friend, _had a gift of music.7. _ is reported, Chinese team won the final.二，单项选择1.I have two brothers, are both good at playing football.A. who B. that C. / D. which2.He was very rude to the Customs officer, made things even worse.A who B. whom C. what D. which3. Look out! Dont get too close to the house _roof is under repair.A. which B. whose C. of which D. what4.is mentioned above, the number of students in senior high schools is increasing.A. Which B. As C. That D. It5. It rained hard yesterday, prevented me from going to the park.A. that B